<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>无标题文档</title>

<script src="bundle.js"></script>
</head>

<body>
<div class="tab" id="tab3">
    <section class="btnBox">
        <input class="active" type="button" value="按钮1" />
        <input type="button" value="按钮2" />
        <input type="button" value="按钮3" />
    </section>
    <ul>
        <li class="show">1</li>
        <li>2</li>
        <li>3</li>
    </ul>
</div>
    <div class='qiehuan'>
        <span class='zuo'><</span>
        <span class='you'>></span>
    </div>
</div>

</body>
</html>